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Rear-wheel drive (RWD) typically places the engine in the front of the vehicle and the driven wheels are located at the rear, a configuration known as front-engine, rear-wheel drive layout (FR layout). The front mid-engine, rear mid-engine and rear engine layouts are also used.
It is called front-wheel drive (FWD) and has become ubiquitous in cars since the late 1970s. Trucks, though, as well as many SUVs and some cars, still use rear-wheel-drive (RWD) systems, in which a long driveshaft transmits power from the engine in the front of the vehicle to the driven wheels at the back.